Alpha, Beta, Delta and Omicron...How Covid changed its forms

The whole world is in panic with the new corona variant Omicron. In India too, there has been concern about this dangerous variant, the speed with which the cases of corona have increased, it can be estimated that how important it is to take precautions against this variant. Since its inception, the coronavirus has changed its various forms from alpha, beta, gamma, delta to this new variant named omicron. How dangerous is this new variant than the earlier ones? Watch this video for details.